Export container filesystem docker
Inspect a container's merged filesystem as a tar stream
docker export <container> | tar -tvf - | head -30
more docker
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Diff container from image
docker diff <container>
Commit container to image
docker commit -m 'debug snapshot' <container> debug-snapshot:$(date +%s)
Run with resource limits
docker run --memory=512m --cpus=0.5 --oom-kill-disable=false myapp
Show container resource usage
docker stats --no-stream --format 'table {{.Name}}\t{{.CPUPerc}}\t{{.MemUsage}}'
Remove dangling images
docker image prune -f